Dan
We have worked out a way to attach the wind screens on to the Horizon. It would be a DIY retro fit. Drill some holes and pop rivet them in place. Should work like a charm.
The Partner two burner stove was originally developed by Partner Steel
http://partnersteel.com for Adventure Trailers. It's basically half of the original 4 burner stove they made. We put it on a full slide in the Horizon kitchen. Later Partner developed the 2 burner in a case, and that line seems to have expanded over the years.
Partner Steel makes equipment for Outfitters and Rafting companies primarily, so their focus is on bullet proof hardware and facilitating cooking on a large scale. A lot of their stuff is 4 or 6 burner units.
They make some killer coffee pots (1 -2.5 gallons!!!), griddles and Dutch ovens.